Breeding behaviour in Macrobrachium rosenbergii (De Man)

During the course of experimentations on the inducement of breeding in Macrobrachium rosenbergii (De Man) under laboratory conditions, detailed observations on the mating behaviour of the species have been made, which have been elaborated in this account. Various behaviour patterns have been analysed critically and the probable directive and releasive factors for these behaviour patterns discussed. Differences in behaviour of the male resulting from the introduction of another mature male in the arena have been described. An aberrant displacement activity which has been observed in one of the males has also been discussed

Soret and Dufour effects on mixed convection along a vertical wavy surface in a porous medium with variable properties

AbstractThe results of mixed convective heat and mass transfer flow along a wavy surface in a Darcy porous medium are presented in the presence of cross diffusion effects. The viscosity and thermal conductivity of the fluid are assumed to be varying with respect to temperature. The governing, flow, momentum, energy and concentration equations are transformed into a set of ordinary differential equations using the similarity transformation and then solved numerically. The present results are compared with previously published work and are found to be a very good agreement. The numerical results of velocity, temperature and concentration as well as Nusselt number and Sherwood number are reported graphically for various values of variable viscosity, variable thermal conductivity, Soret number, Dufour number and amplitude of the wavy surface in two different cases, buoyancy-aiding flow and buoyancy-opposing flow

Operational analysis of roundabouts under mixed traffic flow condition

This thesis addresses the most important element of operational performance of roundabout traffic intersections in Rourkela on capacity analysis. The movements of the vehicles were observed at 5 roundabouts along ring road in Rourkela. Gap acceptance and follow up time were estimated for cars for one hour analysis. The relation between a roundabout performance measure and capacity is expressed in terms of degree of saturation (volume – Capacity ratio). The capacity analysis is done based on gap acceptance method that is adopted by Tanner based on the HCM 2010. The traffic movement data with vehicle characteristics were collected from 5 roundabouts in Rourkela. These 5 roundabouts are directly related to their approach leg numbers. Tanner models use the gap-acceptance theory (or critical headway) to simulate the behaviour of entering vehicles and vehicles circulating within the roundabout. Current research work on roundabout models mostly concentrates on determining the capacity of an approach based on the entering and circulating flows. Approach capacity is calculated as a mathematical function of critical headway and follow-up headway. The Tanner model is based on gap- acceptance theory with gap-acceptance parameters. The Highway Capacity Manual (HCM 2010) roundabout tanner capacity model is an analytical (exponential regression) model with clear basis in gap-acceptance theory. The NCHRP Report 572model is based on empirical exponential regression) capacity model with no explicitly. Capacity analysis results indicated that out of 5 roundabouts 1 of them has greater than 0.85 degree of saturation and this roundabout has critical for traffic flow because this has degree of saturation more than 0.85

Attitudes and barriers of medical students towards conducting research in a medical college

Background: It is well known that evidence-based medicine is the rule for clinical practice. This can be enhanced by conducting good research. Medical students being the future doctors should contribute significantly. But the research among the medical students is very poor with respect to presentations and publications. In view of this data the study was done to know their perception, attitude and barriers for conducting research.Methods: This was a cross sectional observational study involving three different batches of medical students by giving a semi-structured questionnaire.Results: The response among the participants to involve in research was only 30%. Among them the overall attitude and barrier score were 3.69±0.29 and 3.63±0.42 respectively with statistical significance shown between genders and not between batches. The biggest barrier was lack of previous research experience (91.67%). The most common motivational factor was self-interest (90.7%).Conclusions: If given sufficient training and facilities provided, we should be able to get more research among the medical students

Fast Local Binary Patterns for Efficient Face Recognition

LBP, Local Binary Patterns, is an accepted technique for efficient face recognition. The local features improve the recognition process. However, high memory and computational resources are needed for LBP required approaches to improve the performance. Many people used LBP for extracting features and Support Vector Machine (SVM), histogram matching, neural networks as recognition tools. These approaches consume considerable computational resources. We have proposed a fast LBP which uses Two-level Correlation for the classification & recognition. The exhaustive experiments on FERET database 8750 images substantiate the performance compared to others. [Keywords— Face Recognition, LBP, Histogram Matching, Two-level Correlation, FERET data set

Techniques to produce hybrid between Cicer arietinum L. x C. pinnatifidum Jaub

Androgenesis has not been reported in chickpea (Cicer arietinum L.). Interspecific hybridization between C. arietinum and C. pinnatifidum was possible by hormone-aided pollinations, embryo rescue and tissue culture techniques to save aborting hybrid embryos. Since the hybrids did not have a good root system, hybrid shoots were grafted to cultivated chickpea stocks. By this method it was possible to transfer hybrids to soil. Hybrid plants were fragile and were maintained in a growth room. Hybrid plants flowered only when the cytokinin zeatin (1 mg/l) was added to the sterilized tap water used to water the plants. Flowers were pale violet and cleistogamous. All of the components of the flower were present, although the anthers did not dehise. Anthers squashed in acetocarmine revealed from 4–10 divisions in many of the microspores. Induction of androgenesis is believed to be due to wide hybridization between C. arietinum and C. pinnatifidum

Premature Precocious Hybrid Embryo Development in an Interspecific Derivative between Arachis hypogaea and A. cardenasii

The crosses between Arachis cardenasii accession ICG 11558 and cultivated groundnut produced an average of 29% pods and 47% of the pods had small seeds, which were physiologically immature. These pods did not germinated in vivo but when the embryos were dissected and culture, they germinated in vitro. A total of 18 hybrids were obtained. Pollen fertility in the F1 hybrids ranged from 4 to 8%. Backcross between the hybrids and cultivated groundnut produced pegs in large numbers (68%) and 8% of the pegs formed pods. In the pegs formed on the hybrid, growth of the embryo continued irrespective of peg growth. Interspecific derivatived in general and those between A. hypogaea and A. cardenasii in particular take a minimum of 60 days for seed maturation and another 6 months for vegetative growth before the initiation of flowers